How to replace window motor for a1999 sienna?

Answer 1

AnswerTook me about 45 minutes from start to finish. Window regulator w/ motor cost: $55.50 from 1Aauto.com (free shipping, no core charge) It is MUCH EASIER to replace the entire assembly vs. changing the motor. Instructions for Driver Side window. Tools needed (phillips & flat head screw driver, 10 mm socket, wear gloves)

Step 1: Remove plastic cover from top right corner to expose screw - Remove.

Step 2: Remove screw from door release handle- push plastic covering to the right(front) of vehicle to remove. This piece is easy to break, use caution.

Step 3: Remove arm rest by prying up with flat head- remove screws (2)

Step 4: Pry door panel away from door frame by grabbing bottom ends and work your way up (a quick/firm pull usually works) when at the top grab top ends of panel and pull upwards. Next, slide one hand over toward middle and remove wire connections from convenience light(bottom left) and window/door switches (squeeze lever to release).

Step 5: Remove window/door actuator from panel (easily pushes out) and reattach to connection.

Step 6: Turn key to receive power, then lower window(assuming your window lowers but cannot raise as mine did) to the point where you can see access to the10 mm bolts (the one on the right is accessed through small hole). TURN KEY OFF.

Step 7: Remove the 10 mm bolts holding the window (place hands under bolts to catch in case they fall) ( there is no washer). Remove window if desired; my window was easy to remove by tilting right side downward while pulling left side up (from inside of door)

Step 8: Remove wire connection from motor.

Step 9: There are 6 10 mm bolts visible to remove, 4 for the motor and 2 for the regulator. The top bolt for the motor should be removed LAST and NOT to be removed completely- this bolt will help anchor the assembly until all the bolts are removed. You can then lift the assembly off this anchor point WITHOUT removing bolt completely and losing washer inside door :-).

Step 10: Squeeze regulator arms together pull through access hole.

Step 11: Remove last bolt from old unit and attach to new unit (do not tighten)

Step 12: Reinstall new unit by anchoring it on bolt to aid in stabilizing it while attaching 4 bolts for motor unit.

Step 13: (New unit from 1Aauto has modification from old- the lower bracket is no longer attached to motor assembly) Attach the bracket & tighten all remaining bolts.

Step 14: Reattach wire connection to motor & reattach wire connection to window/door actuator.

Step 15: TURN ON KEY. Use window actuator button to lower raise/lower unit to access hole level to reinstall the window glass. Turn OFF KEY. Remove window actuator switch & reinstall it in door panel.

Step 16: Reinstall glass: If you took window out, reverse the process by dipping the right side (forward side) in the door and swoop it down and right to allow left side to fit. Reattach window with bolts.

Step 16: Reassemble door panel:attach convenience light and window/door actuator, lift panel over door top of door and use palm of hand to reattach push pins around door panel. Reinstall screws to arm rest, door release, and corner connections.

You are done!!

Answerits a real pain.....best left to a garage AnswerWhen I replaced mine, the instruction that came with the replacement motor was quite helpful. ($109 from Kragen with a core charge of $35, can get a better deal at Autozone.)

The first thing you will have to do is remove the door panel. There are a handful of screws to take out from the top portion. There are two that are hidden behind the handle trim which you will have to ply off. The bottom part of panel needs to be popped out. Disconnect the wires and lift the entire panel off.

Next you will have to work (lower) the window to a position so that the two 10mm bolts that holds the glass to the regulator can be loosen. My motor was no totally dead but was sticking every half an inch. I found that by starting the engine and pushing the glass and the activation the switch I can gradually lower the glass to the desired position where you can get at those bolts.

Detach the glass from the regulator and pull the glass up along the track. Don't try to take the glass out. Use Duct Tape to hold the glass in the up position.

Remove the four 10mm bolts that holds the regulator and motor to the door. Loosen the black 10mm bolts in the slotted hole. Now, you should be able to grad the regulator and motor and work it out of the door through the largest openning.

Since the regulator arm is spring loaded, you MUST NOT try to detach the motor from the regulator without first locking the arm in its current position. The instruction says to drill a hole through the arm and the plate that holds the motor and use a bolt to keep the arm from moving. I discovered that there are a couple of holes on the plates that I can pass two bolts through and tighten to create the lock. Anyways, I used a marker pen to mark the position just to make sure nothing moves.

Next, the bad motor is taken off by removing three screws. Mount the new motor in place. Make sure the gear is engaged properly with the tooth on the arm. Lubricate all the moving parts with some grease. Now, you are ready to put the whole thing back. Of course, you will have to deal with the wiring for the new motor.

The process took me about an hour and a half. Most of the time was spent on trying to lower the glass into position because the old motor was stuck.